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OLEGan [10]
3 years ago
8

The atomic mass of carbon is 12.01, sodium is 22.99, and oxygen is 16.00. What is the molar mass of sodium oxalate (Na2C2O4)?

Chemistry
1 answer:
Artyom0805 [142]3 years ago
6 0
Na: 2(22.99) +
C: 2(12.01) +
O: 4(16)
= 134.0 g/mol of Na2C2O4
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Ultraviolet radiation and radiation of shorter wavelengths can damage biological molecules because they carry enough energy to b
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Answer:

439.7nm

Explanation:

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E= hc/(λ)

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But the energy was given in Kj , it must be converted to Kj/ photon for unit consistency.

Energy E= 272 kJ/mol × 1mol/6.02× 10^23

Energy= 451.83× 10^-24 Kj/ photon

E= hc/(λ)...........eqn(1)

If we make λ subject of the formula

λ= hc/E

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λ= [(6.626 × 10^-34) × (2.998 × 10^8)]/451.83× 10^-24

λ=(0.00043965) × (1Kj/1000J) × (10^9nm/1m)

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4 0
2 years ago
Can someone please help me with this ASAP, this is due today, please please help me with this.
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Answer:

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Explanation:

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Answer: -

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Explanation: -

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The lowest value of the henry's law for methane gas (CH₄) will be obtained with H₂O as the solvent and a temperature of 349 K.  

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